iMovie is the best video editing program for Mac OS X. It easily shares HD videos shot with your iOS device. With iMovie, you can easily create your own movies. then how to burn iMovie video project to DVD? Please read more information below to follow the steps.

You may use iDVD to finish this task. Yes, to burn iMovie video to DVD, first of all, make sure that you have the iDVD installed on your Mac and you have sufficient internal disc space available. Then go to "Share" > "iDVD" to burn iMovie to DVD.

However, if you do not have iDVD installed, or, as a new owner of OS X 10.8 Mountain Lion, OS X 10.9 Mavericks, Mac OS X 10.10 Yosemite, you will soon realize that iDVD is no longer offered or bundled as part of the iLife package. In this situation, a third-party Mac DVD burning software is highly recommended to burn a DVD from iMovie.
http://www.imovietodvd.com